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With a new planet-wide analysis of vertebrate life, an international team has used 21st century science to update an iconic 1876 map of Earth’s zoological regions. By incorporating data on 21,037 species of mammals, birds and amphibians, Jean-Philippe Lessard, now at McGill University in Montreal, and his colleagues have revised a zoological map created by Alfred Russel Wallace, an oft-overlooked cofounder of the theory of evolution. Wallace’s map divided Earth’s landmasses into six major regions, each with its own distinctive blend of vertebrates.

(Desautels' Karl Moore): "Hormones can affect traders’ views. Cambridge’s John Coates believes that the financial crisis was created, to some degree, by people’s body chemistry. Would having more women on Wall Street and in the City help? Let’s listen to John…"

Doctors should think twice about prescribing drugs like Ritalin and Adderall used to treat attention deficit disorder to healthy individuals seeking to boost their brain power, says an article in this weeks edition of the Canadian Medical Association Journal. The authors say prescription stimulants are used by some people for cognitive enhancement in the absence of any medical need.